5-Methyl-3-(4-phenoxyphenyl)isoxazole-4-carboxylic Acid CAS 1159981-28-8
| CAS No. | 1159981-28-8 |
| Molecular Formula | C17H13NO4 |
| Molecular Weight | 295.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 5-Methyl-3-(4-phenoxyphenyl)isoxazole-4-carboxylic Acid (CAS 1159981-28-8), a certified reference material (molecular formula C17H13NO4, MW 295.29 g/mol) for analytical method development and quality control.
5-Methyl-3-(4-phenoxyphenyl)isoxazole-4-carboxylic Acid (C17H13NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 5-Methyl-3-(4-phenoxyphenyl)isoxazole-4-carboxylic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H13NO4 |
| Molecular Weight | 295.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- (3E)-3-{1-[(2-phenoxyphenyl)amino]ethylidene}oxolan-2-one (CAS 866132-93-6)
- 3-(1-((4-Phenoxyphenyl)amino)ethylidene)dihydrofuran-2(3H)-one (CAS 866145-86-0)
- 3-Methyl-4-{[(4-phenoxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 477850-95-6)
- 2-Oxo-1-(4-phenoxyphenyl)pyrrolidine-3-carboxylic acid (CAS 1017427-68-7)
- 2-((4-Phenoxyphenyl)carbamoyl)cyclopropane-1-carboxylic acid (CAS 1023810-84-5)
- 5-Methyl-3-(3-phenoxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1326815-36-4)
- 5-Oxo-1-(4-phenoxyphenyl)pyrrolidine-3-carboxylic acid (CAS 260555-43-9)
- (5Z)-5-[(2-Phenoxyphenyl)methylidene]-1,3-thiazolidine-2,4-dione (CAS 917602-12-1)
Recommended Standards
- Ethyl 5-((4-fluorophenyl)carbamoyl)-1,3,4-thiadiazole-2-carboxylate (CAS 1142210-68-1)
- (2R,3R,4R,5R)-5-(6-Amino-2-methyl-9H-purin-9-yl)-2-(hydroxymethyl)-4-methoxytetrahydrofuran-3-ol (CAS 116525-70-3)
- 3-(5-{[(2-Fluorophenyl)amino]carbonyl}-1,3,4-thiadiazol-2-yl)propanoic acid (CAS 1142202-72-9)
- 2-(4-Hydroxyphenyl)-7-methoxyquinoline-4-carboxylic acid (CAS 116734-12-4)
- Tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene][3-phenyl-1H-inden-1-ylidene]ruthenium(II) dichloride 254972-49-1 CATMETIUM(R) RF1;TRICYCLOHEXYLPHOSPHINE[1,3-BIS(2,4,6-TRIMETHYLPHENYL)IMIDAZOL-2-YLIDENE][3-PHENYL-1H-INDEN-1-YLIDENE]RUTHENIUM(II) DICHLORIDE SC10234 (CAS 254972-49-1)
- 2-(3-(((tert-Butoxycarbonyl)amino)methyl)pyrrolidin-1-yl)acetic acid (CAS 1353961-08-6)
- pyrrolo[1,2-b]pyridazin-4-ol (CAS 1672660-81-9)
- ethyl 4-[(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)methyl]pyrimidine-5-carboxylate (CAS 1803586-41-5)
- Dexamethasone Isonicotinate (CAS 2265-64-7)
- 3-(3-Phenylpyrazolo[1,5-a]pyrimidin-7-yl)aniline (CAS 931998-17-3)
- Tipiracil Impurity 3 (CAS CATO-C4X-10053)
- 5-Butyl-4-phenylpyrimidin-2-amine (CAS 913322-46-0)
- 2-Phenyl-6-(trifluoromethyl)pyrimidin-4-ol (CAS 158715-14-1)
- Prolactin-Releasing Peptide (12-31) (human) (CAS 235433-36-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com